The Geoprobe® Model 7822DT is a high-capacity direct push machine with a narrow platform for limited access areas and a sufficient stroke for added work space under the hammer. It was designed with specific goals in mind for the technical driller.
Dependability. Expandability. Performance.
These rigs are versatile, whether its needed for environmental, geotechnical, or exploration work. The small footprint of the 7822DT which makes for easy maneuverability and the power of the GH60 Series hammer, this thing can do it all.
Easy probe placement makes the 78 rigs ideal for sampling next to or near foundations, or inside hard-to-reach places.
Turning augers for well installation and other environmental investigations is made easy with the power of the 78 Series machines and augerheads.
A 5-in. concrete core opens up the subsurface for sampling or monitoring well installation.
Cone Penetrating Testing
The augerhead torque allows insertion of ample-sized anchors to stabilize the machine. Up to 9 tons of push is typical for this platform.
Diamond Core Drilling
This 7822DT cored through rock to 150 feet using industry standard NQ wireline diamond core drilling tools.
Direct Image® Subsurface Logging
These machines have been used extensively for MIP, HPT, and EC logging projects.
Monitoring Well Installation
Prepacked screen monitoring wells can be installed through driven 2.25-, 3.25-, 3.5-, or 3.75-in. casing.
Sampling at a new oil and gas development site.
Geotechnical information is collected for a new mining site.
Core samples were taken of permafrost during this site investigation.
Oil Field Investigations
A 7800 is used to install monitoring wells in an oil field.
Coring through rock with the 7822DT and a 3.5 in. DTH Air Hammer.
Macro-Core® sediment sampling in the riverbed during the investigation of a coal tar problem.
A 7822DT collects cored borings from 190 ft. in a remote area of a national forest.
Standard Penetration Testing (SPT)
78 Series machines can be equipped with an automatic drop hammer (optional) for performing SPT testing for geotechnical investigations.
Storage Tank Investigations
Collecting soil and groundwater samples to determine the extent of contamination from a leaking underground fuel line with a 7822DT.